The phenomenon of excess volatility in the context of share prices and of the term structure of interest rates has been documented by the existing literature, highlighting the limitations of traditional models of rational expectations and of reliance on the efficient market hypothesis. The data violates the bounds on volatility that are derived from them. Amia Santini studies the possible shortcomings of the methodologies used to uncover those inconsistencies, and the potential explanations of the observed phenomenon that can be considered in line with the rational expectation framework. She...